Inventor
SONOBE KOJI
JP14 patents
⚠️ This page may combine multiple inventors who share the name “SONOBE KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJI ELECTRIC CO LTD
6 patentsUS10277134B2Apr 30, 2019
Switching power supply device
FUJI ELECTRIC CO LTD2 citations71
US9627977B2Apr 18, 2017
Quasi-resonant switching power supply
FUJI ELECTRIC CO LTD2 citations71
US8879281B2Nov 4, 2014
Switching power source device
FUJI ELECTRIC CO LTD1 citations51
US11411498B2Aug 9, 2022
Controller of switching power supply apparatus
FUJI ELECTRIC CO LTD0 citations50
US11005373B2May 11, 2021
Switching power supply control circuit with bottom point detection
FUJI ELECTRIC CO LTD0 citations49
US10512137B2Dec 17, 2019
LED drive circuit
FUJI ELECTRIC CO LTD0 citations40
FUJI ELECTRIC SYSTEMS CO LTD
3 patentsUS7982248B2Jul 19, 2011
Junction field effect transistor, integrated circuit for switching power supply, and switching power supply
FUJI ELECTRIC SYSTEMS CO LTD7 citations83
US7859860B2Dec 28, 2010
Switching power source device, switching power source control circuit, and switching power source device control method
FUJI ELECTRIC SYSTEMS CO LTD9 citations83
US7948780B2May 24, 2011
Semiconductor device for switching power supply control, startup circuit, and startup method for switching power supply device
FUJI ELECTRIC SYSTEMS CO LTD10 citations82
CHEN JIAN
2 patentsSAITO MASARU
2 patentsUS8283705B2Oct 9, 2012
Junction field effect transistor, integrated circuit for switching power supply, and switching power supply
SAITO MASARU3 citations60
US9461115B2Oct 4, 2016
Junction field effect transistor, integrated circuit for switching power supply, and switching power supply
SAITO MASARU0 citations50